1,964 research outputs found
Species of Xorides (Xorides) (Hymenoptera: Ichneumonidae: Xoridinae) parasitizing wood-boring insects in the Palaearctic part of China
Thirteen species of Xorides (Xorides) parasitizing wood-boring insects in trunks and branches of trees are reported. Three of them, X. (Xorides) pissodius Sheng & Wen sp. n. reared from Pissodes nitidus Roelofs (Curculionidae, Coleoptera) in Larix principis-rupprechtii Mayr (Pinaceae), X. (Xorides) tumidus Sheng & Wen sp. n. reared from Cerambycidae in Quercus sp. (Fagaceae) and X. (Xorides) longicaudus Sheng & Wen sp. n. are new to science. X. (Xorides) ater (Gravenhorst, 1829) is a new record for China. Some new host records are provided. A key to species of Xorides (Xorides) of the Palaearctic part of China is presented
Sequentially witnessing entanglement by independent observer pairs
This study investigates measurement strategies in a scenario where multiple
pairs of Alices and Bobs independently and sequentially observe entangled
states. The aim is to maximize the number of observer pairs that
can witness entanglement. Prior research has demonstrated that arbitrary pairs
() can observe entanglement in all pure entangled states
and a specific class of mixed entangled states [Phys. Rev. A 106 032419
(2022)]. However, it should be noted that other pairs with may not observe entanglement using the same strategy. Moreover, a
novel strategy is presented, enabling every pair of arbitrarily many Alices and
Bobs to witness entanglement regardless of the initial state being a Bell state
or a particular class of mixed entangled states. These findings contribute to
understanding measurement strategies for maximizing entanglement observation in
various contexts.Comment: 11 pages, 2 figure
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